Input sensing device and display device including the same

ABSTRACT

An input sensing device includes a plurality of first sensing electrodes having a plurality of first sensor units extending in a first direction. A plurality of second sensing electrodes has a plurality of second sensor units extending in a second direction different from the first direction. A first strain gauge includes a first force electrode located proximate to a first electrode of the plurality of first sensing electrodes. A second force electrode is located proximate to a second electrode of the plurality of first sensing electrodes. A first connecting electrode connects to both of the first force electrode and the second force electrode.

This application is a Continuation of co-pending patent applicationPublication Ser. No. 16/358,254 filed on Mar. 19, 2019, which claimspriority to Korean Patent Application No. 10-2018-0050430, filed on May2, 2018, in the Korean Intellectual Property Office, the disclosures ofwhich are herein incorporated by reference in their entirety.

TECHNICAL FIELD

The present disclosure relates to a display device and, morespecifically, to an input sensing device and a display device includingthe same.

DISCUSSION OF THE RELATED ART

Various types of display devices are in wide use today. Examples ofpopular display devices include a liquid crystal display (LCD), anorganic light-emitting diode (OLED) display, and others.

Among the various types of display devices, the LCD is one of the mostwidely used flat panel display devices. The LCD includes two substrateson which electric field generating electrodes, such as pixel electrodes,common electrodes, and the like, are formed and a liquid crystal layerinterposed between the two substrates. The LCD displays an image byapplying a voltage to the electric field generating electrodes togenerate an electric field within the liquid crystal layer, therebydetermining an orientation of liquid crystal molecules in the liquidcrystal layer and controlling polarization of incident light.

The OLED display uses OLEDs to display an image. The OLEDs generatelight by recombining electrons with holes within an emission layer. TheOLED display has a high response speed, a high luminance, and a wideviewing angle, and consumes less power than similarly sized LCDs.

SUMMARY

An input sensing device includes a plurality of first sensing electrodeshaving a plurality of first sensor units extending in a first direction.A plurality of second sensing electrodes has a plurality of secondsensor units extending in a second direction different from the firstdirection. A first strain gauge includes a first force electrode locatedproximate to a first electrode of the plurality of first sensingelectrodes. A second force electrode is located proximate to a secondelectrode of the plurality of first sensing electrodes. A firstconnecting electrode connects to both of the first force electrode andthe second force electrode.

A display device includes a display panel and an input sensing paneldisposed on the display panel. The input sensing panel includes aplurality of first sensing electrodes including a plurality of firstsensor units disposed in a first direction, a plurality of secondsensing electrodes including a plurality of second sensor unitsextending in a second direction different from the first direction, anda first strain gauge disposed on a same layer as the plurality of firstsensor units and the plurality of second sensor units. The first straingauge includes a first force electrode located proximate to one of theplurality of first sensing electrodes.

A display device includes a display panel, an input sensing paneldisposed over the display panel, and a window disposed over the inputsensing panel. The input sensing panel is configured to measure both apressure of a touch and a position of the touch. The input sensing panelincludes a plurality of first sensor units configured to measure thepressure of the touch, and a plurality of second sensor units configuredto measure the position of the touch. The plurality of first sensorunits and the plurality of second sensor units are disposed on a commonlayer.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects and features of the present disclosure willbecome more apparent by describing exemplary embodiments thereof indetail with reference to the attached drawings, in which:

FIG. 1 is a cross-sectional view illustrating a display device accordingto an exemplary embodiment of the present disclosure;

FIG. 2 is a schematic plan view illustrating an input sensing panelshown in FIG. 1;

FIG. 3 is a cross-sectional view taken along line I1-I1′ shown in FIG.2;

FIG. 4 is a cross-sectional view taken along line I2-I2′ shown in FIG.2;

FIG. 5 is a cross-sectional view taken along line I3-I3′ shown in FIG.2;

FIG. 6 is a cross-sectional view illustrating a display device accordingto an exemplary embodiment of the present disclosure;

FIG. 7 is a schematic view illustrating a method of sensing a touchpressure in a display device according to an exemplary embodiment of thepresent disclosure;

FIG. 8 is a plan view illustrating an input sensing panel of a displaydevice according to an exemplary embodiment of the present disclosure;

FIG. 9 is a plan view illustrating an input sensing panel of a displaydevice according to an exemplary embodiment of the present disclosure;

FIG. 10 is a plan view illustrating an input sensing panel of a displaydevice according to an exemplary embodiment of the present disclosure;

FIG. 11 is a plan view illustrating a portion of the input sensing panelaccording to an exemplary embodiment of the present disclosure;

FIG. 12 is an enlarged view of a portion A shown in FIG. 11;

FIG. 13 is a cross-sectional view taken along line II1-II1′ shown inFIG. 12;

FIG. 14 is a cross-sectional view taken along line II2-II2′ shown inFIG. 12;

FIG. 15 is a cross-sectional view taken along line II3-II3′ shown inFIG. 12; and

FIG. 16 is a cross-sectional view taken along line II4-II4′ shown inFIG. 12.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Features of the inventive concept and methods of accomplishing the samemay be understood more readily by reference to the following detaileddescription of exemplary embodiments and the accompanying drawings. Theinventive concept may, however, be embodied in many different forms andshould not be construed as being limited to the embodiments set forthherein. Rather, these embodiments are provided so that this disclosurewill be thorough and complete and will fully convey the concept of theinventive concept to those skilled in the art. Like reference numeralsmay refer to like elements throughout the specification and figures.

It will be understood that when an element or layer is referred to asbeing “on”, “connected to” or “coupled to” another element or layer, itcan be directly on, connected or coupled to the other element or layeror intervening elements or layers may be present.

It will be understood that, although the terms first, second, etc. maybe used herein to describe various elements, components, regions, layersand/or sections, these elements, components, regions, layers and/orsections should not be limited by these terms. These terms are only usedto distinguish one element, component, region, layer or section fromanother region, layer or section. Thus, a first element, component,region, layer or section discussed below could be termed a secondelement, component, region, layer or section without departing from theteachings of the inventive concept.

Throughout the specification and figures, the same reference numeralsmay be used to represent the same or similar components.

Hereinafter, exemplary embodiments of the present disclosure will bedescribed with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view illustrating a display device accordingto an exemplary embodiment of the present disclosure.

The display device, according to an exemplary embodiment of the presentdisclosure, may include a display panel 100, an input sensing panel 200,an anti-reflection panel 300, and a window panel 400. A component whichis coupled to another component with an adhesive may be referred toherein as a “panel.” In addition, a component, which is formed through asubsequent process after another component is formed, may be referred toherein as a “layer,” As used herein, panels may include a basesubstrate, while layers may be disposed on a base substrate. Basesubstrates may include synthetic resin films, composite material films,glass, or the like.

The display panel 100 is a panel configured to display an image, in anexemplary embodiment of the present disclosure, the display panel 100may be an organic light-emitting display panel, a liquid crystal displaypanel, a quantum dot display panel, or the like. Hereinafter, thedisplay panel 100 will be described in terms of an organicfight-emitting display panel, although it is to be understood that othertypes of display panels may be used.

The input sensing panel 200 may be disposed on the display panel 100. Inan exemplary embodiment of the present disclosure, the display panel 100and the input sensing panel 200 may be coupled to each other by a firstadhesive member 510. The input sensing panel 200 may be configured tosense both a position and pressure of a touch. The touch may be that ofa user's hand or a stylus. For example, the input sensing panel 200 maysense both the touch position and the touch pressure. The input sensingpanel 200 may be referred to as an input sensing device and the inputsensing device may be embodied as an independent object that is aseparate component from the display panel 100, the window panel 400, orthe like.

The anti-reflection panel 300 may be disposed on the input sensing panel200. In an exemplary embodiment of the present disclosure, theanti-reflection panel 300 and the input sensing panel 200 may be coupledto each other by a second adhesive member 520. The anti-reflection panel300 may reduce the reflectivity of external light incident from an upperside of the window panel 400. In an exemplary embodiment of the presentdisclosure, the anti-reflection panel. 300 may include both a retarderand a polarizer. Further, the anti-reflection panel 300 may include botha black matrix and a color filter. The anti-reflection panel 300 mayalso be omitted.

The window panel 400 may be disposed on the anti-reflection panel 300.In an exemplary embodiment of the present disclosure, the window panel400 and the anti-reflection panel 300 may be coupled to each other by athird adhesive member 530. The window panel 400 may protect the displaypanel 100 or the input sensing panel 200 from scratching or the like.

In an exemplary embodiment of the present disclosure, the first to thirdadhesive members 510, 520, and 530 may each be a pressure-sensitiveadhesive (PSA) member, an optically clear adhesive (OCA) member, or anoptically clear resin (OCR) film. Further, at least one of the inputsensing panel 200, the anti-reflection panel 300, and the window panel400 may be formed as a layer which is laminated on another component,and does not include its own base substrate. For example, the inputsensing panel 200 may be formed as an input sensing layer which uses anupper surface of the display panel 100 as a base surface thereof. Forexample, the input sensing layer may be formed by a subsequent processafter a process of forming the display panel 100.

Hereinafter, the input sensing panel 200 will be described in moredetail.

FIG. 2 is a schematic plan view showing the input sensing panel shown inFIG. 1.

Referring to FIG. 2, the input sensing panel 200 may include a baselayer 210, a plurality of first sensing electrodes IE1-1 to IE1-5, aplurality of second sensing electrodes IE2-1 to IE2-4, first straingauges ST1, second strain gauges ST2, a plurality of dummy electrodesDE, a plurality of first signal lines SL1-1 to SL1-5, a plurality ofprimary second signal lines SL2-1 a to SL2-4 a, a plurality of secondarysecond signal lines SL2-1 b to SL2-4 b, and a plurality of third signallines SL3-1 to SL3-4.

The base layer 210 may be disposed on the display panel 100 and may becoupled to the upper surface of the display panel 100 by the firstadhesive member 510 (see FIG. 1). In an exemplary embodiment of thepresent disclosure, the base layer 210 may be a synthetic resin film, aglass substrate, an organic/inorganic composite material substrate, orthe like. The base layer 210 is not limited to having only a singlelayer, and may include a plurality of layers coupled to each otherthrough an adhesive member or the like. In an exemplary embodiment ofthe present disclosure, when the input sensing panel 200 is an inputsensing layer directly formed on the display panel 100, the base layer210 may be omitted.

The base layer 210 may be divided into a display region DD-DA and anon-display region DD-NDA. Here, the display region DD-DA is defined asa region overlapping a region on which an image is displayed on thedisplay panel 100 (see FIG. 1). Further, the non-display region DD-NDAis defined as a region which is located outside the display region DD-DAand overlaps a region on which an image is not displayed on the displaypanel 100 (e.g. a region that does not include pixels).

The plurality of first sensing electrodes IE1-1 to IE1-5, the pluralityof second sensing electrodes IE2-1 to IE2-4, the first strain gaugesST1, the second strain gauges ST2, and the plurality of dummy electrodesDE may be disposed in the display region DD-DA. Further, the pluralityof first signal lines SL1-1 to SL1-5, the plurality of primary secondsignal lines SL2-1 a to SL2-4 a, the plurality of secondary secondsignal lines SL2-1 b to SL2-4 b, and the plurality of third signal linesSL3-1 to SL3-4 may be disposed in the non-display region DD-NDA.

Each of the plurality of first sensing electrodes IE1-1 to IE1-5 mayinclude a plurality of first sensor units SP1 and a plurality of firstconnecting units CP1. The plurality of first sensor units SP1 may bedisposed in a first direction d1 and connected to each other using theplurality of first connecting units CP1. For example, the plurality offirst connecting units CP1 may be disposed between pairs of theplurality of first sensor units SN and the first connecting units CP1may electrically and physically connect the plurality of adjacent firstsensor units SP1 to each other.

Each of the plurality of first sensing electrodes IE1-1 to lE1-5 may bedisposed in the display region DD-DA in a second direction d2. Accordingto an exemplary embodiment of the present disclosure, the firstdirection d1 may cross the second direction d2. Referring to FIG. 2, thefirst direction d1 is a row direction and the second direction d2 is acolumn direction. For example, the plurality of first sensing electrodesIE1-1 to IE1-5 may be spaced apart from each other and disposed ondifferent rows.

The plurality of first sensing electrodes IE1-1 to IE1-5 may beconnected to the plurality of first signal lines SL1-1 to SL1-5,respectively. For example, first ends of the plurality of first sensingelectrodes IE1-1 to IE1-5 may be directly connected to first ends of theplurality of first signal lines SL1-1 to SL1-5, respectively. Secondends of the plurality of first signal lines SL1-1 to SL1-5 may bedirectly connected to a plurality of first signal pad units SL-Pincluded in a pad region NDA-PD, respectively.

Each of the plurality of second sensing electrodes IE2-1 to IE2-4 mayinclude a plurality of second sensor units SP2 and a plurality of secondconnecting units CP2. The plurality of second sensor units SP2 may bedisposed in the second direction d2 and connected to each other usingthe plurality of second connecting units CP2. For example, the pluralityof second connecting units CP2 may be disposed between the plurality ofsecond sensor units SP2 and may electrically and physically connects theplurality of adjacent second sensor units SP2 to each other.

Each of the plurality of second sensing electrodes IE2-1 to IE2-4 may bedisposed in the display region DD-DA in the first direction d1. Forexample, the plurality of second sensing electrodes IE2-1 to IE2-4 maybe spaced apart from each other and disposed in different columns. Theplurality of second sensor units SP2 of the plurality of second sensingelectrodes IE2-1 to IE2-4 may be disposed on the same layer as theplurality of first sensing electrodes IE1-1 to IE1-5. Alternatively, theplurality of second connecting units CP2 may be disposed on theplurality of first sensing electrodes IE1-1 to IE1-5 and the pluralityof second sensor units SP2.

The plurality of second sensing electrodes IE2-1 to IE2-4 may beconnected to the plurality of second signal lines SL2-1 to SL2-4,respectively. For example, first ends of the plurality of second sensingelectrodes IE2-1 to IE2-4 may be directly connected to first ends of theplurality of primary second signal lines SL2-1 a to SL2-4 a,respectively. Further, second ends of the plurality of second sensingelectrodes IE2-1 to IE2-4 may be directly connected to first ends of theplurality of secondary second signal lines SL2-1 b to SL2-4 b,respectively. Second ends of the plurality of primary second signallines SL2-1 a to SL2-4 a and second ends of the plurality of secondarysecond signal lines SL2-1 b to SL2-4 b may be directly connected to theplurality of first signal pad units SL-P included in the pad regionNDA-PD.

For example, both ends of the plurality of second sensing electrodesIE2-1 to IE2-4 may be connected to the plurality of first signal padunits SL-P through a plurality of signal lines. Accordingly, sensingsensitivity may be preserved by preventing a voltage drop of a drivingsignal that may be generated in the plurality of second sensingelectrodes IE2-1 to IE2-4 having a relatively longer length than theplurality of first sensing electrodes IE1-1 to IE1-5.

In an exemplary embodiment of the present disclosure, only the firstends of the plurality of second sensing electrodes IE2-1 to IE2-4 areconnected to the plurality of first signal pad units SL-P. Further, bothends of the plurality of first sensing electrodes IE1-1 to IE1-5 mayalso be connected to the plurality of first signal pad units SL-P.

In an exemplary embodiment of the present disclosure, each of theplurality of first sensor units SP1 and the plurality of second sensorunits SP2 may have a square, diamond, or rhombus shape. The square,diamond, or rhombus shape may alternatively be another polygonal shapethat is close to the square, diamond, or rhombus shape in considerationof process conditions or the like. However, the present disclosure isnot limited thereto, and the plurality of first sensor units SP1 and theplurality of second sensor units SP2 may have an arbitrary polygonalshape, or may have another shape (e.g., a bar shape). Further, theshapes and the arrangement structures of the first strain gauges ST1,the second strain gauges ST2, and the plurality of dummy electrodes DEmay differ according to the shapes of the plurality of sensor units.Furthermore, the arrangement structures of the plurality of first signallines SL1-1 to SL1-5, the plurality of primary second signal lines SL2-1a to SL2-4 a, and the plurality of secondary second signal lines SL2-1 bto SL2-4 b are not limited to those shown in FIG. 2.

In an exemplary embodiment of the present disclosure, all of theplurality of first signal lines SL1-1 to SL1-5, the plurality of primarysecond signal lines SL2-1 a to SL2-4 a, and the plurality of secondarysecond signal lines SL2-1 b to SL2-4 b may be disposed on the same sidein a plan view.

In an exemplary embodiment of the present disclosure, the plurality offirst signal lines SL1-1 to SL1-5, the plurality of primary secondsignal lines SL2-1 a to SL2-4 a, and the plurality of secondary secondsignal lines SL2-1 b to SL2-4 b may be replaced by circuit boards or thelike which are manufactured and coupled separately.

The plurality of first sensing electrodes IE1-1 to IE1-5 and theplurality of second sensing electrodes IE2-1 to IE2-4 may be alternatelydisposed. Each of the plurality of first sensing electrodes IE1-1 toIE1-5 and each of the plurality of second sensing electrodes IE2-1 toIE2-4 may act as a driving electrode (Tx) or a sensing electrode (Rx)and sense external touch input.

In an exemplary embodiment of the present disclosure, the plurality offirst sensing electrodes IE1-1 to IE1-5 and the plurality of secondsensing electrodes IE2-1 to IE2-4 may sense external touch input by amutual-cap method and/or a self-cap method.

In an exemplary embodiment of the present disclosure, the plurality offirst sensing electrodes IE1-1 to IE1-5 and the plurality of secondsensing electrodes IE2-1 to IE2-4 may calculate coordinates of externaltouch input during a first interval by a mutual-cap method and thenre-calculate coordinates of the external touch input during a secondinterval by a self-cap method.

The plurality of dummy electrodes DE may be disposed on the same layeras a layer on which the plurality of first sensing electrodes IE1-1 toIE1-5 and the plurality of second sensing electrodes IE2-1 to IE2-4 aredisposed, in the display region DD-DA. For example, the plurality ofdummy electrodes DE may be disposed at a boundary between the pluralityof first sensing electrodes IE1-1 to IE1-5 and the plurality of secondsensing electrodes IE2-1 to IE2-4. Therefore, the plurality of dummyelectrodes DE may prevent the degradation of the optical visibilitycharacteristic that may otherwise be caused by a visible patterns of theplurality of sensing electrodes or the like.

Each of the plurality of dummy electrodes DE may be a floating electrodehaving an insular shape. Further, the plurality of dummy electrodes DEmay have different shapes. The plurality of dummy electrodes DE may beformed to have different shapes, and thus the visibility of thesestructures to the user may be reduced so that the optical visibilitycharacteristic may be increased.

In an exemplary embodiment of the present disclosure, the first straingauges ST1 may be disposed on the same layer as the plurality of firstsensing electrodes IE1-1 to IE1-5, the plurality of second sensingelectrodes IE2-1 to IE2-4, and the plurality of dummy electrodes DE aredisposed. The first strain gauges ST1, the plurality of first sensingelectrodes IE1-1 to IE1-5, the plurality of second sensing electrodesIE2-1 to IE2-4, and the plurality of dummy electrodes DE are disposed inthe display region DD-DA. Each of the first strain gauges ST1 has ashape in which the plurality of dummy electrodes DE are connected toeach other. Hereinafter, the first strain gauges ST1 will be describedin more detail.

The first strain gauge ST1 may have a shape substantially extending inthe first direction d1. The first strain gauge ST1 may have a shape inwhich a first force electrode IE3-1, a second force electrode IE3-2, anda first connecting electrode CE1 are coupled to each other.

The first force electrode IE3-1 may substantially extend in the firstdirection d1 and may include at least one bent portion. Further, thefirst force electrode IE3-1 may extend along one side of the firstsensing electrode IE1-4, for example, along an outer periphery of alower portion of the first sensing electrode IE1-4, as shown in FIG. 2.

The second force electrode IE3-2 may substantially extend in the firstdirection d1 and may include at least one bent portion. Further, thesecond force electrode IE3-2 may extend along one side of the firstsensing electrode IE1-5, for example, along an outer periphery of anupper portion of the first sensing electrode IE1-5, as shown in FIG. 2.In an exemplary embodiment of the present disclosure, the first forceelectrode IE3-1 and the second force electrode IE3-2 may be symmetricalwith respect to each other. The first force electrode IE3-1 and thesecond force electrode IE3-2 may also be in a zigzag shape.

The first connecting electrode CE1 may be disposed at one side of thefirst force electrode IE3-1 and one side of the second force electrodeIE3-2 to connect the first force electrode IE3-1 to the second forceelectrode IE3-2. Accordingly, the first strain gauges ST1 may have aloop shape extending along an outer periphery of each of the pluralityof second sensor units SP2 disposed on the same row.

The second strain gauges ST2 may be disposed above the first straingauges ST1 as shown in FIG. 2. However, the arrangement positions of thefirst and second strain gauges ST1 and ST2 are not limited to thoseshown in FIG. 2. The second strain gauge ST2 may have a shape extendingsubstantially in the first direction d1. The second strain gauge ST2 mayhave a shape in which a third force electrode IE3-3, a fourth forceelectrode IE3-4, and a second connecting electrode CE2 are coupled toeach other.

Each of the third force electrode IE3-3 and the fourth force electrodeIE3-4 may extend substantially in the first direction d1 and may includeat least one bent portion. The third force electrode IE3-3 may extendalong one side off to first sensing electrode IE1-3, for example, alongan outer periphery of a lower portion of the first sensing electrodeIE1-3, as shown in FIG. 2. The fourth force electrode IE3-4 may extendalong one side of the first sensing electrode IE1-4, for example, alongan outer periphery of an upper portion of the first sensing electrodeIE1-4, as shown in FIG. 2. In an exemplary embodiment of the presentdisclosure, the third force electrode IE3-3 and the fourth forceelectrode IE3-4 may be symmetrical with respect to each other. The thirdforce electrode IE3-3 and the fourth force electrode IE3-4 may also beexpressed in a zigzag shape.

The second connecting electrode CE2 may be disposed at another side ofthe third force electrode IE3-3 and another side of the fourth forceelectrode IE3-4 to connect the third force electrode IE3-3 to the fourthforce electrode IE3-4. The second strain gauges ST2 may have a loopshape extending along the outer periphery of each of the plurality ofsecond sensor units SP2 disposed on the same row.

In FIG. 2, the second connecting electrode CE2 is shown as beingdisposed at a side different from the first connecting electrode CE1,but the present disclosure is not limited thereto. The first connectingelectrode CE1 and the second connecting electrode CE2 may be disposed atthe same side.

The first and second strain gauges ST1 and ST2 may be connected tosecond signal pad units RP1 to RP4, which will be described below,through the plurality of third signal lines SL3-1 to SL3-4. In thedisplay device according to the embodiment of the present disclosure, anamount of change in resistance of the first and second strain gauges ST1and ST2 may be measured through the second signal pad units RP1 to RP4and the plurality of third signal lines SL3-1 to SL3-4, and thus thetouch pressure of the user may be sensed. This will be described below.

Unlike the one shown in the drawing, the first and second strain gaugesST1 and ST2 may have different shapes. Further, the shapes of the firstand second strain gauges ST1 and ST2 may be changed according to theshapes of the plurality of first sensing electrodes IE1-1 to IE1-5 andthe plurality of second sensing electrodes IE2-1 to IE2-4.

In an exemplary embodiment of the present disclosure, the plurality offirst sensing electrodes IE1-1 to IE1-5, the plurality of second sensingelectrodes IE2-1 to IE2-4, the first strain gauges ST1, the secondstrain gauges ST2, and the plurality of dummy electrodes DE may beformed of a transparent or semitransparent conductive material. Here,the transparent or semitransparent conductive material may include atleast one selected from the group consisting of indium tin oxide (ITO),indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In₂O₃), indiumgallium oxide (IGO), and aluminum zinc oxide (AZO).

In an exemplary embodiment of the present disclosure, each of theplurality of first signal lines SL1-1 to SL1-5, the plurality of primarysecond signal lines SL2-1 a to SL2-4 a, the plurality of secondarysecond signal lines SL2-1 b to SL2-4 b, and the plurality of thirdsignal lines SL3-1 to SL3-4 may be formed as a single film includingconductive materials such as aluminum (Al), copper (Cu), molybdenum(Mo), chromium (Cr), titanium (Ti), tungsten (W), molybdenum tungsten(MoW), molybdenum titanium (MoTi) and copper/molybdenum titanium(Cu/MoTi), funned as a double film including the aforementionedconductive materials, or formed as a triple film including theaforementioned conductive materials. However, the present disclosure isnot limited thereto, and the plurality of first signal lines SL1-1 toSL1-5, the plurality of primary second signal lines SL2-1 a to SL2-4 a,the plurality of secondary second signal lines SL2-1 b to SL2-4 b, andthe plurality of third signal lines SL3-1 to SL3-4 may be made ofvarious metals or other conductors.

In an exemplary embodiment of the present disclosure, the plurality offirst sensing electrodes IE1-1 to IE1-5, the plurality of second sensingelectrodes IE2-1 to IE2-4, the first strain gauges ST1, the secondstrain gauges ST2 may be disposed on a different layer from that of theplurality of first signal lines SL1-1 to SL1-5, the plurality of primarysecond signal lines SL2-1 a to SL2-4 a, the plurality of secondarysecond signal lines SL2-1 b to SL2-4 b, and the plurality of thirdsignal lines SL3-1 to SL3-4. Accordingly, a contact hole and aconnecting electrode for electrically connecting two conductors disposedon different layers may be additionally needed.

The pad region NDA-PD is defined as a region in which a plurality of padunits are disposed. The pad region NDA-PD may include the first signalpad units SL-P and the second signal pad units RP1 to RP4. The padregion NDA-PD may be electrically connected to a touch driving circuitthrough a separate flexible substrate.

The first signal pad units SL-P may be connected to the plurality offirst signal lines SL1-1 to SL1-5, the plurality of primary secondsignal lines SL2-1 a to SL2-4 a, and the plurality of secondary secondsignal lines SL2-1 b to SL2-4 b. Accordingly, the plurality of firstsensing electrodes IE1-1 to IE1-5 may receive a driving signal from thetouch driving circuit through the first signal pad units SL-P which areconnected to the plurality of first signal lines SL1-1 to SL1-5 and theplurality of first signal lines SL1-1 to SL1-5. Further, the pluralityof second sensing electrodes IE2-1 to IE2-4 may receive a driving signalfrom the touch driving circuit through the first signal pad units SL-Pwhich are connected to the plurality of primary second signal linesSL1-1 a to SL2-4 a, the plurality of secondary second signal lines SL2-1b to SL2-4 b, and the plurality of signal lines.

The second signal pad units RP1 to RP4 may be connected to the first andsecond strain gauges ST1 and ST2 through the plurality of third signallines SL3-1 to SL3-4. The second signal pad units RP1 to RP4 may beconnected to the first strain gauges ST1, the second strain gauges ST2,and a Wheatstone bridge circuit unit, which will be described below. TheWheatstone bridge circuit unit may be configured to measure the touchpressure by a change in resistance of the first and second strain gaugesST1 and ST2. This will be described below.

Hereinafter, an arrangement relationship between the components includedin the input sensing panel 200 will be described.

FIG. 3 is a cross-sectional view taken along line I1-I1′ shown in FIG.2. FIG. 4 is a cross-sectional view taken along line I2-I2′ shown inFIG. 2. FIG. 5 is a cross-sectional view taken along line I3-I3′ shownin FIG. 2.

Referring to FIGS. 2 to 5, the plurality of first sensing electrodesIE1-1 to IE1-5, the plurality of second sensor units SP2 of theplurality of second sensing electrodes IE2-1 to IE2-4, the first straingauges ST1, and the second strain gauges ST2 may be disposed on the baselayer 210 and may be disposed on the same layer. In an exemplaryembodiment of the present disclosure, the plurality of first sensingelectrodes IE1-1 to IE1-5, the plurality of second sensor units SP2 ofthe plurality of second sensing, electrodes IE2-1 to IE2-4, the firststrain gauges ST1, and the second strain gauges ST2 may besimultaneously formed during a single process involving a single mask.

A first insulating layer 220 may be disposed on the plurality of firstsensing electrodes IE1-1 to IE1-5, the plurality of second sensor unitsSP2 of the plurality of second sensing electrodes IE2-1 to IE2-4, thefirst strain gauges ST1, and the second strain gauges ST2. First contactholes CNT1 may be thrilled in the first insulating layer 220 to exposeat least a portion of each of the plurality of second sensor units SP2.In an exemplary embodiment of the present disclosure, the firstinsulating layer 220 may have a single layer structure or a multi-layerstructure. In an exemplary embodiment of the present disclosure, thefirst insulating layer 220 may include an inorganic material, an organicmaterial, or a composite material. Here, the inorganic material mayinclude aluminum oxide, titanium oxide, silicon oxide, siliconoxynitride, zirconium oxide, and/or hafnium oxide. Further, the organicmaterial may include, an acrylic resin, a methacrylic resin, apolyisoprene, a vinyl resin, an epoxy resin, a urethane resin, acellulose resin, a siloxane resin, a polyimide resin, a polyamide resin,and/or a perylene resin. In an exemplary embodiment of the presentdisclosure, the first insulating layer 220 may be formed of an elasticmaterial having a high dielectric constant.

The plurality of second connecting units CP2 may be disposed on thefirst insulating layer 220. The plurality of second connecting units CP2may be in direct contact with the plurality of second sensor units SP2,which are exposed by the first contact holes CNT1, the first insulatinglayer 220. Accordingly, the plurality of second connecting units CP2 mayelectrically connect the plurality of adjacent second sensor units SP2to each other.

A second insulating layer 230 may be disposed on the plurality of secondconnecting units CP2. The second insulating layer 230 may serve as aprotective layer for protecting the plurality of second connecting unitsCP2 or the like. In an exemplary embodiment of the present disclosure,the second insulating layer 230 may include an inorganic material, anorganic material, or a composite material. In an exemplary embodiment ofthe present disclosure, the second insulating layer 230 may be formed ofan adhesive material. In this case, the second adhesive member 520 shownin FIG. 1 may be omitted, and the anti-reflection panel 300 and theinput sensing panel 200 may be coupled to each other through the secondinsulating layer 230.

In an exemplary embodiment of the present disclosure, the first forceelectrodes IE3-1 of the first strain gauges ST1 may have the same firstwidth w1. Here, the first width w1 may be within a range of about 30 amto about 140 μm. Further, in an exemplary embodiment of the presentdisclosure, a distance l1 between the first force electrode IE3-1 andthe first sensor units SP1 and a distance l2 between the first forceelectrode IE3-1 and the second sensor unit SP2 may be the same as ordifferent from each other. In an exemplary embodiment of the presentdisclosure, the distances l1 and l2 may range from about 20 μm to about30 μm.

In an exemplary embodiment of the present disclosure, the fourth forceelectrodes IE3-4 of the second strain gauges ST2 may have the samesecond width w2. Here, the second width w2 may satisfy a value of about30 μm to about 140 μm. The first width w1 and the second width w2 may bethe same or may be different from each other. Further, in an exemplaryembodiment of the present disclosure, a distance l3 between the fourthforce electrode IE3-4 and the second sensor unit SP2, a distance l4between the fourth force electrode IE3-4 and the first connecting unitsCP1, a distance l5 between the first force electrode IE3-1 and the firstconnecting units CP1, and a distance l6 between the first forceelectrode IE3-1 and the second sensor unit SP2 may be the same or may bedifferent from each other. In an exemplary embodiment of the presentdisclosure, the distances l3, l4, l5, and l6 may range from about 20 μmto about 30 μm.

The first insulating layer 220, which is fully funned, may be replacedby an insulating pattern 240 (see FIG. 6) which is disposed on only aportion of the base layer 210. This will be described in more detailwith reference to FIG. 6.

FIG. 6 is a cross-sectional view showing a display device according toan exemplary embodiment of the present disclosure. Here, FIG. 6corresponds to the cross-sectional view taken along line I2-I2′ shown inFIG. 2.

Referring to FIG. 6, the insulating pattern 240 may be disposed on theplurality of first connecting units CP1 and may be located in regions inwhich the plurality of first connecting units CP1 and the plurality ofsecond sensor units CP2′ cross each other. In an exemplary embodiment ofthe present disclosure, the insulating pattern 240 may include aphotosensitive material such as silicon dioxide, titanium dioxide, zincoxide, silicon nitride, aluminum nitride, and/or tantalum oxide. In anexemplary embodiment of the present disclosure, the insulating pattern240 may include an organic material or an inorganic material.

A plurality of second connecting units CP2′ may be disposed on theinsulating pattern 240 and may be directly connected to the plurality ofadjacent second sensor units SP2. Therefore, the plurality of adjacentsecond sensor units SP2 may be electrically connected to each other.

A third insulating layer 250 may be disposed on the plurality of secondconnecting units CP2′. Since the third insulating layer 250 is formed ofthe same material as the second insulating layer 230 described above, adescription thereof will be omitted.

Next, a method of sensing a touch pressure by a change in resistance offirst and second strain gauges ST1 and ST2 will be described withreference to FIG. 7.

FIG. 7 is a diagram illustrating a method of sensing a touch pressure ina display device according to an exemplary embodiment of the presentdisclosure.

Referring to FIG. 7, each of first and second strain gauges ST1 and ST2corresponds to one resistor constituting a first Wheatstone bridgecircuit unit WS1.

For example, the first strain gauge ST1 may constitute a first resistorR1 of the first Wheatstone bridge circuit unit WS1 and the second straingauge ST2 may constitute a fourth resistor R4 of the first Wheatstonebridge circuit unit WS1. In an exemplary embodiment of the presentdisclosure, a second resistor R2 may be a variable resistor. Further, inan exemplary embodiment of the present disclosure, a third resistor R3may have a fixed value.

A third strain gauge ST3 as a second resistor R2 and a fourth straingauges ST4 as a third resistor R3 may be included in the firstWheatstone bridge circuit unit WS1. Each of a first power source P1 anda second power source P2 of the first Wheatstone bridge circuit unit WS1may receive an external voltage. Here, in an exemplary embodiment of thepresent disclosure, the second power source P2 may receive a ground(GND) voltage.

A first end of the first resistor R1 may be connected to the first powersource P1 and a second end thereof may be connected to a second terminalN2. A first end of the second resistor R2 may be connected to the firstpower source P1 and a second end thereof may be connected to a firstterminal N1. A first end of the third resistor R3 may be connected tothe second terminal N2 and a second end thereof may be connected to thesecond power source P2. Further, a first end of the fourth resistor R4may be connected to the first terminal N1 and a second other end thereofmay be connected to the second power source P2. Here, a potentialdifference between the first terminal N1 and the second terminal N2 maybe made zero by adjusting a value of the second resistor R2 which is avariable resistor. Accordingly, no current flows between the firstterminal N1 and the second terminal N2.

Thereafter, when the user applies a touch pressure to the input sensingpanel 200, and for example, to at least a portion of a region in whichthe first and second strain gauges ST1 and ST2 are disposed, at leastone of the resistors R1 and R4 corresponding to the first and secondstrain gauges ST1 and ST2 are changed. For example, the lengths of thefirst and second strain gauges ST1 and ST2 may be increased by theexternal touch pressure, and the corresponding resistance value may bechanged accordingly.

Due to the change in resistance, a voltage difference is generatedbetween the first terminal N1 and the second terminal N2 and a currentcorresponding to the voltage difference flows. The touch pressure of theuser may be sensed by measuring the voltage difference or an amount ofthe flowing current, in an exemplary embodiment of the presentdisclosure, the touch driving circuit may measure the voltage differenceor the amount of the current and sense the touch pressure of the user onthe basis of the measured result.

A position of the first Wheatstone bridge circuit unit WS1 is notparticularly limited. In an exemplary embodiment of the presentdisclosure, the first Wheatstone bridge circuit unit WS1 may be formedby appropriately arranging interconnections including the first andsecond strain gauges ST1 and ST2 in the non-display region DD-NDA. In anexemplary embodiment of the present disclosure, the first Wheatstonebridge circuit unit WS1 may be formed on a flexible substrateelectrically connected to the pad region NDA-PD.

For example, the input sensing panel 200 may sense the touch pressure ofthe user by a change in resistance of the strain gauge. Further, thefirst and second strain gauges ST1 and ST2 may be disposed at a boundarybetween the plurality of first sensing electrodes IE1-1 to IE1-5 and theplurality of second sensing electrodes IE2-1 to IE2-4, and thus thedegradation of the optical visibility characteristic due to the visiblepatterns of the plurality of sensing electrodes or the like may beprevented.

In the display device, according to an exemplary embodiment of thepresent disclosure, a touch position of the user may be sensed by achange in capacitance between the plurality of first sensing electrodesIE1-1 to IE1-5 and the plurality of second sensing electrodes IE2-1 toIE2-4, and the touch pressure of the user may be sensed by a change inresistance between the strain gauge located in the corresponding region.For example, the display device, according to an exemplary embodiment ofthe present disclosure, may include the input sensing panel 200 whichsenses both the touch position and pressure of the user, and may thusnot include a separate sensor module for detecting a touch pressure.Therefore, a total thickness of the input sensing panel 200 may bereduced.

Unlike the arrangement shown in FIG. 7, the input sensing panel 200 mayform a plurality of Wheatstone bridge circuit units. For example, thenumber of Wheatstone bridge circuit units, the number of strain gaugesconstituting the Wheatstone bridge circuit units, positions of thestrain gauges, the number of fixed resistors, and the like may varyaccording to a region in which the touch pressure of the user isrequired to be detected.

This will be described in more detail with reference to FIGS. 8 to 16.However, descriptions identical to that of FIGS. 1 to 7 will be omitted.

FIG. 8 is a plan view showing an input sensing panel of a display deviceaccording to an exemplary embodiment of the present disclosure.

Referring to FIG. 8, an input sensing panel 200_2 may further includethird strain gauges ST3 and fourth strain gauges ST4.

The third strain gauge ST3 may have a shape extending substantially in afirst direction d1 and may be disposed on only some regions in a row.The third strain gauges ST3 may have a shape in which a fifth forceelectrode IE3-5, a sixth force electrode IE3-6, and a third connectingelectrode CE3 are coupled to each other.

The fourth strain gauge ST4 may have a shape extending substantially inthe first direction d1 and may be disposed on only some regions in therow. The fourth strain gauges ST4 may have a shape in which a seventhforce electrode IE3-7, an eighth force electrode IE3-8, and a fourthconnecting electrode CE4 are coupled to each other.

The third and fourth strain gauges ST3 and ST4 may have differentlengths. Further, the third and fourth strain gauges ST3 and ST4 mayhave lengths shorter than those of the first and second strain gaugesST1 and ST2. Accordingly, the input sensing panel 200_2 may sense thetouch pressure on only some regions in the row rather than on allregions of the row.

The touch pressure may be sensed in a plurality of regions through thethird strain gauges ST3 and the fourth strain gauges ST4. For example,each of multi-touch pressures of the user may be sensed by a method ofselectively connecting the plurality of strain gauges to each of thefirst Wheatstone bridge circuit units WS1 using switching elements orthe like.

However, the present disclosure is not limited to that shown in FIG. 8,and the number, the lengths, and the positions of the strain gauges maybe adjusted according to the region in which the touch pressure of theuser is required to be detected. Further, in the drawing, two threeelectrodes forming a strain gauge are shown as forming a loop structurein units of rows, but the present disclosure is not limited thereto. Forexample, the two force electrodes may be further spaced apart from eachother to form a loop structure in units of a plurality of rows.

FIG. 9 is a plan view showing an input sensing panel of a display deviceaccording to an exemplary embodiment of the present disclosure.

Referring to FIG. 9, an input sensing panel 200_3 may further includeprimary fifth strain gauges IE3-5 a and secondary fifth strain gaugesIE3-5 b. Here, the primary fifth strain gauges IE3-5 a and the secondaryfifth strain gauges IE3-5 b might not have a loop structure and may beconnected in parallel. For example, one end of each of the primary fifthstrain gauges IE3-5 a and one end of each of the secondary fifth straingauges IE3-5 b may be connected to the same signal line. Further, theother end of each of the primary fifth strain gauges IE3-5 a and theother end of each of the secondary fifth strain gauges IE3-5 b may beconnected to the same signal line. The fifth strain gauges IE3-5 a andthe primary fifth strain gauges IE3-5 b may be connected to Wheatstonebridge circuit units to have a parallel structure, and thus theresistance values of the primary fifth strain gauges IE3-5 a and thesecondary fifth strain gauges IE3-5 b may be reduced to half of theresistance values of the first and second strain gauges ST1 and ST2.

FIG. 10 is a plan view illustrating an input sensing panel of a displaydevice according to an exemplary embodiment of the present disclosure.

Referring to FIG. 10, an input sensing panel 200_4 may include first tofourth strain gauges ST1 to ST4 connected to a second Wheatstone bridgecircuit unit WS2.

As described above, the touch pressure of the user may be detected usinga change in resistance of the first strain gauge ST1 and the fourthstrain gauge ST4 corresponding to a fourth resistor R4 and a firstresistor R1, respectively. Temperature compensation may be performedusing a change in resistance of the third strain gauge ST3 correspondingto a second resistor R2 and the second strain gauge ST2 corresponding toa third resistor R3.

For example, when a temperature of the display device is changed due toa change in an external temperature or an increase of an internaltemperature, values of resistors constituting the second Wheatstonebridge circuit unit WS2 may be changed. The second Wheatstone bridgecircuit unit WS2 may be configured to add the second and third straingauges ST2 and ST3 and the second and third strain gauges ST2 and ST3may be disposed adjacent to the first and fourth strain gauges ST1 andST4, and thus a change in an external temperature may be compensatedfor. In an exemplary embodiment of the present disclosure, a value ofthe touch pressure may be measured by storing a relationship between thechange in resistance value between the second and third strain gaugesST2 and ST3 and the change in temperature therebetween in advance andthen applying offset values according to the above relationship to anamount of change in resistance between the first and fourth straingauges ST1 and ST4.

Since a relationship between the resistors constituting the secondWheatstone bridge circuit unit WS2 and the first to fourth strain gaugesST1 to ST4 is given as one example, the values of the resistorsconstituting the second Wheatstone bridge circuit unit WS2 may varyaccording to the positions of the first to fourth strain gauges ST1 toST4 or the like.

FIG. 11 is a plan view illustrating a portion of an input sensing panelaccording to an exemplary embodiment of the present disclosure. FIG. 12is an enlarged view of a portion A shown in FIG. 11. FIG. 13 is across-sectional view taken along line II1-II1′ shown in FIG. 12. FIG. 14is a cross-sectional view taken along line II2-II2′ shown in FIG. 12.FIG. 15 is a cross-sectional view taken along line II3-II3′ shown inFIG. 12. FIG. 16 is a cross-sectional view taken along line II4-II4′shown in FIG. 12.

Referring to FIGS. 11 to 16, a plurality of first sensor units SP1 and aplurality of second sensor units SP2 may have, a polygonal shape closeto a square, diamond, or rhombus shape. Further, the plurality ofadjacent second sensor units SP2 may be electrically connected to eachother through two second connecting units CP2 a and CP2 b. The twosecond connecting units CP2 a and CP2 b may be disposed on insulatingpatterns 240 a and 240 b, respectively.

The two second connecting units CP2 a and CP2 b and force electrodesconstituting a strain gauge may be maintained at a predeterminedinterval when viewed from above. For example, the predetermined intervalmay be about 75 μm or more. Therefore, a short circuit between twoelectrodes (e.g. a connecting unit and a three electrode) caused bymisalignment which may occur in a process of forming the insulatingpatterns 240 a and 240 b and the two second connecting units CP2 a andCP2 b may be prevented.

Since the plurality of first sensor units SP1 and the plurality ofsecond sensor units SP2 have a polygonal shape close to a square,diamond, or rhombus shape, widths s1, s2, s4, and s5 of a first forceelectrode IE3-1_2 of a first strain gauge ST1 extending along an outerperiphery of each of the sensor units may also vary according to theposition thereof. For example, the widths s1, s2, s4, and s5 of thefirst force electrode IE3-1_2 may be different from each other. Here,the widths s1, s2, s4, and s5 of the first force electrode IE3-1_2 maysatisfy a value of about 30 μm to about 140 μm. Further, in an exemplaryembodiment of the present disclosure, a distance t1 between the firstforce electrode IE3-1_2 and the first sensor unit SP1 and a distance t3between the first force electrode IE3-1_2 and the second sensor unit SP2may be the same or may be different from each other. In an exemplaryembodiment of the present disclosure, the distances t1 and t3 may rangefrom about 20 μm to about 30 μm.

A width s2 of a fourth force electrode IE3-4_2 of the second straingauges ST2 and the widths s1, s2, s4, and s5 of the first forceelectrodes IE3-1_2 may be the same. Accordingly, the width s2 of thefourth force electrode IE3-4_2 of the second strain gauges ST2 maysatisfy a value of about 30 μm to about 140 μm. However, the presentdisclosure is not limited thereto, and the fourth force electrodeIE3-4_2 and the first force electrode IE3-1_2 may have different widths.In an exemplary embodiment of the present disclosure, a width s3 of thefirst connecting unit CP1 may be greater than the widths of the fourthforce electrode IE3-4_2 and the first force electrode IE3-1_2. Forexample, the width s3 of the first connecting units CP1 may be about 130μm.

Further, in an exemplary embodiment of the present disclosure, adistance t2 between the first force electrode IE3-1_2 and the fourthforce electrode IE3-4_2 and a distance t2 between the first forceelectrode IE3-1_2 and the first connecting units CP1 may be the same ormay be different from each other according to the shape of the sensorunit at the corresponding position. In an exemplary embodiment of thepresent disclosure, the distance t2 may range from about 20 μm to about30 μm.

According to exemplary embodiments of the present disclosure, both touchposition and pressure can be sensed using a single input sensing panel.

Further, since a separate input sensing module is not included, athickness of an input sensing panel and a thickness of a display deviceincluding the input sensing panel can be reduced.

Exemplary embodiments described herein are illustrative, and manyvariations can be introduced without departing from the spirit of thedisclosure or from the scope of the appended claims. For example,elements and/or features of different exemplary embodiments may becombined with each other and/or substituted for each other within thescope of this disclosure and appended claims.

What is claimed is:
 1. An input sensing device, comprising: a pluralityof first sensor units extending in a first direction; a plurality ofsecond sensor units extending in a second direction different from thefirst direction; a first connecting unit between adjacent first sensorunits among the plurality of first sensor units; a second connectingunit between adjacent second sensor units among the plurality of secondsensor unit; and a first force electrode between a first sensor unitamong the plurality of first sensor units and a second sensor unit amongthe plurality of second sensor units, wherein the second connecting unitis electrically connected to each of the adjacent second sensor unitsthrough a pair of contact holes that are disposed on opposite sides ofthe first force electrode.
 2. The input sensing device of claim 1,wherein the first connecting unit overlaps the second connecting unit.3. The input sensing device of claim 1, wherein the first forceelectrode does not overlap the first connecting unit.
 4. An inputsensing device, comprising: a plurality of first sensor units extendingin a first direction; a plurality of second sensor units extending in asecond direction different from the first direction; a first connectingunit between adjacent first sensor units among the plurality of firstsensor units; a second connecting unit between second sensor units amongthe plurality of second sensor unit; a first force electrode between afirst sensor unit among the plurality of first sensor units and a secondsensor unit among the plurality of second sensor units; and a secondforce electrode between the first sensor unit and another second sensorunit among the plurality of second sensor units, wherein the first forceelectrode overlaps the second connecting unit.
 5. The input sensingdevice of claim 4, wherein the second force electrode overlaps thesecond connecting unit.
 6. The input sensing device of claim 4, whereinthe second force electrode does not overlap the first connecting unit.7. The input sensing device of claim 4, further comprising a firstconnecting electrode connected to the first force electrode and thesecond force electrode.
 8. The input sensing device of claim 7, furthercomprising a base layer on which the plurality of first sensor units,the plurality of second sensor units, the first connecting electrode,the first three electrode, and the second force electrode are disposed.9. The input sensing device of claim 8, further comprising a firstinsulating layer on the first connecting electrode, the first forceelectrode, and the second force electrode.
 10. The input sensing deviceof claim 9, wherein the first insulating layer is disposed on theplurality of first sensor units and the plurality of second sensorunits.
 11. The input sensing device of claim 9, wherein the secondconnecting unit is disposed on the first insulating layer.
 12. The inputsensing device of claim 11, wherein the second connecting unit is indirect contact with the adjacent second sensor units through firstcontact holes, and wherein each of the first contact holes exposescorresponding one of the adjacent second sensor units.
 13. The inputsensing, device of claim 11, further comprising a second insulatinglayer on the second connecting unit.
 14. The input sensing device ofclaim 7, wherein the plurality of first sensor units, the plurality ofsecond sensor units, the first force electrode, the second forceelectrode, and the first connecting electrode are disposed on a samelayer.
 15. The input sensing device of claim 4, the first connectingunit is between the first force electrode and the second forceelectrode.
 16. The input sensing device of claim 4, wherein the firstforce electrode extends along one side of the second sensor unit, andthe second force electrode extends along one side of the another secondsensor unit.
 17. The input sensing device of claim 1, further comprisinga dummy electrode between another first sensor unit among the pluralityof first sensor units and another second sensor unit among the pluralityof second sensor units.
 18. The input sensing device of claim 17,wherein the dummy electrode does not overlap the plurality of firstsensor units, the plurality of second sensor units, the first connectingunit, the second connecting unit, and the first force electrode.
 19. Adisplay device, comprising: a display panel; and an input sensing paneldisposed on the display panel, wherein the input sensing panel includes:a plurality of first sensor units extending in a first direction; aplurality of second sensor units extending in a second directiondifferent from the first direction; a first connecting unit betweenadjacent first sensor units among the plurality of first sensor units; asecond connecting unit between adjacent second sensor units among theplurality of second sensor unit; and a first force electrode between afirst sensor unit among the plurality of first sensor units and a secondsensor unit among the plurality of second sensor units, wherein thesecond connecting unit is electrically connected to each of the adjacentsecond sensor units through a pair of contact holes that are disposed onopposite sides of the first force electrode.
 20. The input sensingdevice of claim 19, wherein the first force electrode does not overlapthe first connecting unit.